8. Using some methods to attract the target to open your mails. If the receivers have a trust and confidence on you, they will definitely open the mail and read it. So it’s critical to build a good reputation and trustful relationship. Besides, some tricks also play an important part in attracting the targets. For example, previewed information is very important. At present, many mail systems have a function of preview. If the receivers consider your mail is very like advertisement, they won’t open it; therefore, we must make use the previewed information is very attractive, at least it doesn’t cause any dislike or aversion. A specialized or customized title is also important, especially when the title contains the name of the receiver or some related information.